Almost one in five consumers (19.6%) now prefers to buy all their music as downloads, says trade body the BPI. Last year, 27.7% of UK music fans purchased downloads from stores such as iTunes or Amazon; or streamed songs on services like Spotify or YouTube. Gotye's Somebody That I Used To Know was the most-streamed song of 2012, closely followed by Carly Rae Jepsen's Call Me Maybe with more than 3.7 billion tracks streamed in the UK in 2012 or 140 per household.